Full text of this article is only available in PDF format.

Timo Pukkala (email), Taneli Kolström

Competition indices and the prediction of radial growth in Scots pine.

Pukkala T., Kolström T. (1987). Competition indices and the prediction of radial growth in Scots pine. Silva Fennica vol. 21 no. 1 article id 5306. https://doi.org/10.14214/sf.a15463

Abstract

The effect of competition on the radial growth of Scots pine (Pinus sylvestris L.) was studied in three naturally regenerated stands located in North Karelia, Finland. The competition situation of an individual tree was described with various competition indices which depended on the sizes and distances from the neighbouring trees. One competition index explained about 50% of the variation in 5-year radial growth in one stand. If all stands were combined, one index explained 43.5%, two indices 48.9% and three indices 51.2% of the variation. In one stand, the best competition indices accounted for about 20% of that variation which could not be explained by tree diameter. If all three stands were combined, the best index explained 11% of the residual variation. About 40% of the variation in 5-year radial growth could not be explained by the diameter and competition indices.
The PDF includes an abstract in Finnish.

Keywords
Pinus sylvestris; stand characteristics; simulation; tree growth; competition; radial growth

Published in 1987

Views 2341

Available at https://doi.org/10.14214/sf.a15463 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Pukkala T., Kangas J. et al. (1997) Integrating forest-level and compartment-level i.. Silva Fennica vol. 31 no. 4 article id 5636
Kangas J., Karsikko J. et al. (1993) A method for estimating the suitability function.. Silva Fennica vol. 27 no. 4 article id 5519
Pohjonen V., Pukkala T. (1993) Yield of Cupressus lusitanica in Ethiopia. Silva Fennica vol. 27 no. 3 article id 5511
Nousiainen I., Pukkala T. (1992) Use of computer graphics for predicting the amen.. Silva Fennica vol. 26 no. 4 article id 5492
Pukkala T., Karsikko J. et al. (1992) A spatial model for the diameter of thickest bra.. Silva Fennica vol. 26 no. 4 article id 5490
Kangas J., Pukkala T. (1992) A decision theoretic approach applied to goal pr.. Silva Fennica vol. 26 no. 3 article id 5484
Pukkala T., Kolström T. (1991) Effect of spatial pattern of trees on the growth.. Silva Fennica vol. 25 no. 3 article id 5449
Pukkala T., Pohjonen V. (1990) Use of linear programming in land use planning i.. Silva Fennica vol. 24 no. 2 article id 5424
Pukkala T., Mubita O. et al. (1990) Management planning system for tree plantations. Silva Fennica vol. 24 no. 2 article id 5419
Kuuluvainen T., Pukkala T. (1989) Effect of Scots pine seed trees on the density o.. Silva Fennica vol. 23 no. 2 article id 5379
Pukkala T., (1989) Predicting diameter growth in even-aged Scots pi.. Silva Fennica vol. 23 no. 2 article id 5376
Pukkala T., (1989) Prediction of tree diameter and height in a Scot.. Silva Fennica vol. 23 no. 2 article id 5375
Pohjonen V., Pukkala T. (1988) Profitability of establishing Eucalyptus globulu.. Silva Fennica vol. 22 no. 4 article id 5363
Pukkala T., (1988) Methods to incorporate the amenity of landscape .. Silva Fennica vol. 22 no. 2 article id 5346
Pukkala T., (1988) Effect of spatial distribution of trees on the v.. Silva Fennica vol. 22 no. 1 article id 5338
Pukkala T., Kuuluvainen T. (1987) Effect of canopy structure on the diurnal interc.. Silva Fennica vol. 21 no. 3 article id 5316
Pukkala T., (1987) Effect of seed production on the annual growth o.. Silva Fennica vol. 21 no. 2 article id 5312
Pukkala T., (1987) Model for predicting the seed crop of Picea abie.. Silva Fennica vol. 21 no. 2 article id 5311
Pukkala T., Kolström T. (1987) Competition indices and the prediction of radial.. Silva Fennica vol. 21 no. 1 article id 5306
Pukkala T., (1987) Simulation model for natural regeneration of Pin.. Silva Fennica vol. 21 no. 1 article id 5305
Kellomäki S., Hänninen H. et al. (1987) A tentative model for describing the effects of .. Silva Fennica vol. 21 no. 1 article id 5302
Kangas J., Loikkanen T. et al. (1996) A participatory approach to tactical forest plan.. Acta Forestalia Fennica vol. 0 no. 251 article id 7513
Aza A., Kallio A. M. I. et al. (2022) Species selection in areas subjected to risk of .. Silva Fennica vol. 56 no. 3 article id 10732
Lappi J., Pukkala T. (2020) Analyzing ingrowth using zero-inflated negative .. Silva Fennica vol. 54 no. 4 article id 10370
Jin X., Pukkala T. et al. (2019) Developing growth models for tree plantations us.. Silva Fennica vol. 53 no. 4 article id 10217
Pukkala T., Holt Hanssen K. et al. (2019) Stem taper and bark functions for Norway spruce .. Silva Fennica vol. 53 no. 3 article id 10187
Pukkala T., Hokkanen T. et al. (2010) Prediction models for the annual seed crop of No.. Silva Fennica vol. 44 no. 4 article id 131
Pasalodos-Tato M., Pukkala T. et al. (2009) Optimal management of Pinus radiata silvopastora.. Silva Fennica vol. 43 no. 5 article id 176
Pukkala T., (2009) Population-based methods in the optimization of .. Silva Fennica vol. 43 no. 2 article id 211
Zeng H., Pukkala T. et al. (2007) Application of ant colony optimization for the r.. Silva Fennica vol. 41 no. 2 article id 299
Heinonen T., Kurttila M. et al. (2007) Possibilities to aggregate raster cells through .. Silva Fennica vol. 41 no. 1 article id 474
Palahí M., Pukkala T. et al. (2006) Calibrating predicted tree diameter distribution.. Silva Fennica vol. 40 no. 3 article id 332
Pukkala T., Miina J. (2005) Optimising the management of a heterogeneous stand Silva Fennica vol. 39 no. 4 article id 364
Pukkala T., Kurttila M. (2005) Examining the performance of six heuristic optim.. Silva Fennica vol. 39 no. 1 article id 396
Heinonen T., Pukkala T. (2004) A comparison of one- and two-compartment neighbo.. Silva Fennica vol. 38 no. 3 article id 419
Ihalainen M., Salo K. et al. (2003) Empirical prediction models for Vaccinium myrtil.. Silva Fennica vol. 37 no. 1 article id 513
Pukkala T., Miina J. et al. (2002) Thinning response and thinning bias in a young S.. Silva Fennica vol. 36 no. 4 article id 524
Ihalainen M., Pukkala T. (2001) Modelling cowberry (Vaccinium vitis-idaea) and b.. Silva Fennica vol. 35 no. 3 article id 588
Kangas J., Leskinen P. et al. (2000) Integrating timber price scenario modeling with .. Silva Fennica vol. 34 no. 4 article id 621
Tahvanainen T., Kaartinen K. et al. (2007) Comparison of approaches to integrate energy woo.. Silva Fennica vol. 41 no. 1 article id 310